<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<div id="app">

    <section id="todoapp">
        <header class="header">
            <h1>小黑记事本</h1>
            <input autofocus="autofocus" autocomple="off" placeholder="请输入任务"
                   class="new-todo" v-model="inputValue" @keyup.enter="add"></input>
        </header>
        <section class="main">
            <ul class="todo-list">
                <li class="todo" v-for="{item,index} in list">
                    <div class="view">
                        <span class="index">{{index+1}}</span>
                        <label>{{item}}</label>
                        <button class="destroy" @click="remove(index)"></button>
                    </div>
                </li>
            </ul>

        </section>
        <footer class="footer" v-show="list-length!=0">
            <span class="todo-count" v-if="list.length!=0">
                <strong>
                    {{list.length}}
                </strong>
                items left
            </span>
            <button class="clear-completed" @click="clear" v-show="list.length!=0">
                clear
            </button>

        </footer>
    </section>
    <footer class="info">

    </footer>


</div>

<script>
    var app = new Vue({
        el:"#todoapp",
        data:{
            list:["写代码","吃饭饭","睡觉觉"],
            inputValue:"好好学习，天天向上"

        },
        methods:{
            add:function () {
                this.list.push(this.inputVaule);

            },
            remove:function (index) {
                this.list.splice(index,1);
            },
            clear:function () {
                this.list = [];

            }
        }
    })
</script>
</body>
</html>
